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If the variable $a is equal to 5 and variable $b is equal to character a, what’s the value of $$b?

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If the variable $a is equal to 5 and variable $b is equal to character a, what’s the value of $$b?
posted Apr 2, 2015 by Vrije Mani Upadhyay

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1 Answer

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I tested the following code 

<?php 
$a=5;
$b=a;
echo $$b;
?>

Output is 5 :)

answer Apr 2, 2015 by Salil Agrawal
why we used $$ this sign as two  times for print the value???
commented Apr 3, 2015 by Ravneet Kaur
$$b means $a in the above example, $makes a text into a variable when we say $$ i.e. $$b which means $b is a variable with value a and a is also a variable as there is another $ present.
commented Apr 3, 2015 by Salil Agrawal
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